Shoe nail for mountain shoes



May. 17, 1932. R. FucHs SHOE NAIL FOR `MOUNTAIN SHOES Filed Feb. 9, 1951 Patented May 17, 1932 UNITED STATES PATENT oricE RUDOLF FUCHS, F EGGENBERG, NEAR GRAZ,v AUSTRIA.

Application filed February 9, 1931, Serial No. 514,666,5and in Austria January 27, 1930.

The invention relates to shoe nails for mountain shoes.

The object of the invention is to provide a shoe nail for mountain shoes, which may be easily attached without the use of speciall tools in a manner to withstand all stresses during actual use without becoming loose. The

nail according to the invention provides a sharp walking edge at the outermost circumterence of the sole, thus ensuring surefooted walking on steep slopes or snow-fields.

The nail according to the invention is especially designed for heavy mountain shoes with laminated soles held together and united with the upper part of the shoe by a handstitching and is so designed as not to damage these stitches when inserted, to protect the same against wear and to hold the leathersheets of the sole together.

Shoe nails Jfor mountain shoes are already known which are provided with straight projections which, when in use, will, however, become loose as straight projections or prongs may easily be pulled out of the sole; they have moreover the drawback that great care must be used when the projections of the side plates, are bent down and driven into the upper edge of the sole, and it is necessary to use special tools to avoid cutting the thread of the stitching which is not protected at this point.

The shoe nail according to this invention avoids this drawback by virtue of its novel design, which renders it possible to insert it from above without any danger of damaging the stitching and without the use of any tool other than a hammer and to obtain a solid anchorage, so that the nail will not become loose when used. Another advantage of the shoe nail according to this invention is that it may be manufactured at very low cost of a single piece of sheet-metal without hand-forging.

The shoe nail according to the invention comprises a side-plate with two long projections on one end and a heavy ground engagn ing projection at the other end. Rigidly secured at right angles to said edge of the side-plate is a bottom-plate and flexibly joined to said ground-engaging projection are hookshaped claws preferably arranged at both 50 sides of the bottom plate. The prongs of these claws lwhich are to be inserted intothe i. i

sole are curvedwith the center of curvature at the flexible joint, in order to obtain a sure anchor hold ofthe nail.

In another modification of the invention the bottom plate and the claws are integral with each other and both are'iezribly joined to the ground-engaging projection.

Fig. l shows a shoe nail according tothe inv l f el Fig. 6 a nail completely inserted into the sole.

Fig. 7 shows the nail driven andV inserted into the sole with the latter in a perspective view. p Y v Fig. S shows 'another modification of the nail according to the invention.

Referring to Figs. l to 3, l designates the working or groundeengaging projection of the nail. 3 is the side-plate with long projections 2. 4 is the bottom plate which may have a hole 6 for the insertion of a screw or tack. The claws 5 are flexibly joined at 7 to the side-plate and have prongs 5a of arcuate form, the center of curvatures of the prongsV 5a being at 7. To attach the nail to the shoe, the projections 2 are driven 'from above into the upper protruding edge of the scle 8, as Shown in Fig. l. Then the side-plates are bent downward until they rest lat against the sides of the sole and the bottom plate lies smoothly against the underside oi the sole (Fig. 5). In this position, the points of the prongs 5a are just touching the sole. It they are now driven into vthe same (Fig. 6) they move along an arcuate path around the flexible joint 7 and due to their arcuate shape they can easily enter into the leather and will hold firmly. If desired, a screw or tack may be inserted through the hole 6 though this is not necessary in most cases. As shown in Figs.

6 and 7, the stitching 9 is not damaged by this j operation and Will be effectively protected against Wear, as shown in Fig. 7.

In the modification shown in Fig. 8, the claws 5 and the bottom plate are formed of single piece. The arcuate form of the prongs 5a is clearly visible..

What I claim is n 1. In an article of the class described, side-plate provided at one end with projections adapted to be inserted into theupper Y protruding edge of the sole 'of 'a 'shoe' ron above and having a rigid `groundengaging projection at the other end, a bottom plate rigidly securedk Y, at right angles to safi'd ground-engaging projection and hookshaped claws joined to saidv projection aind flexible along the line of joining, fsaid'claWS having prongs adapted to be driven into'the sole, and said prongs being ofl "arcuate "forni With the center of curvature at thevline oi joining of the claws to the ground engaging projection.

2f.' In an article of theA cl-ass'cle'sc'ribfd, -a side-plate provided at one end with projections-adapted to be insertedrin't'o the/'upper protruding edge of the solejof'a shoe from above and vformed at its other end With a thickened portion constituting a ground engaging projection, a bottom pla-te joined to said plate at an angle adjacent the ground engaging projection, said' claws being Tieni-ble along a line adjacent saidv plate, "said lclaws having prongs to be driven into the' shoe sole, and'said prongs bei-ng of arcuate form with the center of curvature at the iiexi'bl'e line of the claws. y i f In testimony that I yclaim the fore 0"oi-ngas my invention, I have si ed my name. 

